General Description

The AS1500 is a digital potentiometer with 256 programmable steps. The values of the resistor can be controlled via 3 wire serial interface capable to handle programming rates up to 10MHz. The AS1500 is available in four different resistor values. The AS1500 incorporates a 10k?, the AS1501 a 20k?, the AS1502 a 50k? and the AS1503 a 100k?fixed resistor.

Key Features

- 256-Position

- Available in four Resistance values

- AS1500 resistance 10kOhms

- AS1501 resistance 20kOhms

- AS1502 resistance 50kOhms

- AS1503 resistance 100kOhms

- Power Shutdown —Less than 1 μA

- 3-Wire SPI-Compatible Serial Data Input

- 10 MHz Update Data Loading Rate

- 2.7 V to 5.5 V Single-Supply Operation

- Temperature Range –40°C to +125°C

- Package SO-8

- Compatible to AD8400

Applications

- Line Impedance Matching

- Volume Control, Panning

- Mechanical Potentiometer Replacement

- Power Supply Adjustment

- Programmable Filters, Delays, Time Constants